K&N crankcase vent filters are designed for racing but are trick enough for show cars. Shield and top plate are chrome-plated for beauty and durability. Base plate is zinc plated steel with an attached vent tube that is designed to push into existing rubber breather grommets. Filter has a 3" outside diameter with a deflector shield. *Designed to increase horsepower and acceleration while providing excellent filtration *Million Mile Limited Warranty *The World's Best Air Filter *